diff --git a/subsys/bluetooth/controller/ll_sw/ull_conn.c b/subsys/bluetooth/controller/ll_sw/ull_conn.c
index ec21acaff29..6d6ba60e29b 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_conn.c
+++ b/subsys/bluetooth/controller/ll_sw/ull_conn.c
@@ -42,17 +42,6 @@
 #include <soc.h>
 #include "hal/debug.h"
 
-/* Macro to return PDU time */
-#if defined(CONFIG_BT_CTLR_PHY_CODED)
-#define PKT_US(octets, phy) \
-	(((phy) & BIT(2)) ? \
-	 (80 + 256 + 16 + 24 + ((((2 + (octets) + 4) * 8) + 24 + 3) * 8)) : \
-	 (((octets) + 14) * 8 / BIT(((phy) & 0x03) >> 1)))
-#else /* !CONFIG_BT_CTLR_PHY_CODED */
-#define PKT_US(octets, phy) \
-	(((octets) + 14) * 8 / BIT(((phy) & 0x03) >> 1))
-#endif /* !CONFIG_BT_CTLR_PHY_CODED */
-
 static int init_reset(void);
 static void ticker_op_update_cb(u32_t status, void *param);
 static inline void disable(u16_t handle);
@@ -184,22 +173,6 @@ struct ll_conn *ll_connected_get(u16_t handle)
 	return conn;
 }
 
-u8_t ull_conn_allowed_check(void *conn)
-{
-	struct ll_conn * const conn_hdr = conn;
-	if (conn_hdr->llcp_req != conn_hdr->llcp_ack) {
-		return BT_HCI_ERR_CMD_DISALLOWED;
-	}
-
-	conn_hdr->llcp_req++;
-	if (((conn_hdr->llcp_req - conn_hdr->llcp_ack) & 0x03) != 1U) {
-		conn_hdr->llcp_req--;
-		return BT_HCI_ERR_CMD_DISALLOWED;
-	}
-
-	return 0;
-}
-
 void *ll_tx_mem_acquire(void)
 {
 	return mem_acquire(&mem_conn_tx.free);
@@ -264,7 +237,7 @@ u8_t ll_conn_update(u16_t handle, u8_t cmd, u8_t status, u16_t interval_min,
 
 	if (!cmd) {
 
-		ret = ull_conn_allowed_check(conn);
+		ret = ull_conn_llcp_req(conn);
 		if (ret) {
 			return ret;
 		}
@@ -367,7 +340,7 @@ u8_t ll_feature_req_send(u16_t handle)
 		return BT_HCI_ERR_CMD_DISALLOWED;
 	}
 
-	ret = ull_conn_allowed_check(conn);
+	ret = ull_conn_llcp_req(conn);
 	if (ret) {
 		return ret;
 	}
@@ -388,7 +361,7 @@ u8_t ll_version_ind_send(u16_t handle)
 		return BT_HCI_ERR_CMD_DISALLOWED;
 	}
 
-	ret = ull_conn_allowed_check(conn);
+	ret = ull_conn_llcp_req(conn);
 	if (ret) {
 		return ret;
 	}
@@ -1281,6 +1254,22 @@ void ull_conn_tx_ack(struct ll_conn *conn, memq_link_t *link,
 	ll_tx_ack_put(conn->lll.handle, tx);
 }
 
+u8_t ull_conn_llcp_req(void *conn)
+{
+	struct ll_conn * const conn_hdr = conn;
+	if (conn_hdr->llcp_req != conn_hdr->llcp_ack) {
+		return BT_HCI_ERR_CMD_DISALLOWED;
+	}
+
+	conn_hdr->llcp_req++;
+	if (((conn_hdr->llcp_req - conn_hdr->llcp_ack) & 0x03) != 1) {
+		conn_hdr->llcp_req--;
+		return BT_HCI_ERR_CMD_DISALLOWED;
+	}
+
+	return 0;
+}
+
 static int init_reset(void)
 {
 	/* Initialize conn pool. */
diff --git a/subsys/bluetooth/controller/ll_sw/ull_conn_internal.h b/subsys/bluetooth/controller/ll_sw/ull_conn_internal.h
index 4626ecfa253..41be335b831 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_conn_internal.h
+++ b/subsys/bluetooth/controller/ll_sw/ull_conn_internal.h
@@ -7,7 +7,17 @@
 /* Macro to convert time in us to connection interval units */
 #define RADIO_CONN_EVENTS(x, y) ((u16_t)(((x) + (y) - 1) / (y)))
 
-u8_t ull_conn_allowed_check(void *conn);
+/* Macro to return PDU time */
+#if defined(CONFIG_BT_CTLR_PHY_CODED)
+#define PKT_US(octets, phy) \
+	(((phy) & BIT(2)) ? \
+	 (80 + 256 + 16 + 24 + ((((2 + (octets) + 4) * 8) + 24 + 3) * 8)) : \
+	 (((octets) + 14) * 8 / BIT(((phy) & 0x03) >> 1)))
+#else /* !CONFIG_BT_CTLR_PHY_CODED */
+#define PKT_US(octets, phy) \
+	(((octets) + 14) * 8 / BIT(((phy) & 0x03) >> 1))
+#endif /* !CONFIG_BT_CTLR_PHY_CODED */
+
 struct ll_conn *ll_conn_acquire(void);
 void ll_conn_release(struct ll_conn *conn);
 u16_t ll_conn_handle_get(struct ll_conn *conn);
@@ -30,3 +40,4 @@ void ull_conn_tx_lll_enqueue(struct ll_conn *conn, u8_t count);
 void ull_conn_link_tx_release(void *link);
 void ull_conn_tx_ack(struct ll_conn *conn, memq_link_t *link,
 		     struct node_tx *tx);
+u8_t ull_conn_llcp_req(void *conn);
diff --git a/subsys/bluetooth/controller/ll_sw/ull_master.c b/subsys/bluetooth/controller/ll_sw/ull_master.c
index b0cbeaae85d..f27b518f537 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_master.c
+++ b/subsys/bluetooth/controller/ll_sw/ull_master.c
@@ -312,7 +312,7 @@ u8_t ll_chm_update(u8_t *chm)
 			continue;
 		}
 
-		ret = ull_conn_allowed_check(conn);
+		ret = ull_conn_llcp_req(conn);
 		if (ret) {
 			return ret;
 		}
@@ -341,7 +341,7 @@ u8_t ll_enc_req_send(u16_t handle, u8_t *rand, u8_t *ediv, u8_t *ltk)
 		return BT_HCI_ERR_UNKNOWN_CONN_ID;
 	}
 
-	ret = ull_conn_allowed_check(conn);
+	ret = ull_conn_llcp_req(conn);
 	if (ret) {
 		return ret;
 	}
diff --git a/subsys/bluetooth/controller/ll_sw/ull_slave.c b/subsys/bluetooth/controller/ll_sw/ull_slave.c
index 6815ed49790..8150353db29 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_slave.c
+++ b/subsys/bluetooth/controller/ll_sw/ull_slave.c
@@ -439,7 +439,7 @@ u8_t ll_start_enc_req_send(u16_t handle, u8_t error_code,
 
 	if (error_code) {
 		if (conn->refresh == 0U) {
-			ret = ull_conn_allowed_check(conn);
+			ret = ull_conn_llcp_req(conn);
 			if (ret) {
 				return ret;
 			}
@@ -463,7 +463,7 @@ u8_t ll_start_enc_req_send(u16_t handle, u8_t error_code,
 		memcpy(&conn->llcp.encryption.ltk[0], ltk,
 		       sizeof(conn->llcp.encryption.ltk));
 
-		ret = ull_conn_allowed_check(conn);
+		ret = ull_conn_llcp_req(conn);
 		if (ret) {
 			return ret;
 		}